WI4700267 · Wisconsin
HANCOCK WATERWORKS
Federal fiscal 2026Q3 · EPA violation and follow-up records
- Violation records shown
- 17
- EPA health-based flag
- 2
- Health-based records unresolved in this snapshot
- 0
- Monitoring and reporting records
- 11
Counties listed by EPA · Waushara County, Wisconsin
Find the utility’s annual water quality report. For current advisories, check the utility or local drinking-water authority.
Violations and what followed
Among 14 resolved records with both dates, the median interval from recorded noncompliance start to EPA’s return-to-compliance date was 158.5 days. The interval uses the reporting periods and dates on file.
Other or unclassified · Unaddressed by formal action
Public Notification Violation for NPDWR ViolationViolation 2600067 · Public Notice · Public Notice Rule and Revised PN RuleNoncompliance period start July 2, 2025 · first reported September 1, 2026
No linked action row appears in the records shown.Monitoring or reporting · Resolved
Notification, Known or Potential LSLViolation 2500062 · LEAD AND COPPER RULE REVISIONS · Lead and Copper Rule RevisionsNoncompliance period start July 2, 2025 · period end August 7, 2025 · first reported December 17, 2025 · EPA return-to-compliance field August 7, 2025
1 linked action
Enforcement and resolution records linked by EPA Action ID Date Category EPA action type 2500046 August 7, 2025 Resolving State Compliance achieved Other or unclassified · Resolved
Consumer Confidence Report Inadequate ReportingViolation 2500061 · Consumer Confidence Rule · Consumer Confidence RuleNoncompliance period start July 1, 2025 · period end January 15, 2026 · first reported December 17, 2025 · EPA return-to-compliance field January 15, 2026
2 linked actions
Enforcement and resolution records linked by EPA Action ID Date Category EPA action type 2500044 July 25, 2025 Informal State Violation/Reminder Notice 2600053 January 15, 2026 Resolving State Compliance achieved Other or unclassified · Resolved
Consumer Confidence Report Complete Failure to ReportViolation 2500060 · Consumer Confidence Rule · Consumer Confidence RuleNoncompliance period start July 1, 2025 · period end January 15, 2026 · first reported December 17, 2025 · EPA return-to-compliance field January 15, 2026
2 linked actions
Enforcement and resolution records linked by EPA Action ID Date Category EPA action type 2500045 July 25, 2025 Informal State Violation/Reminder Notice 2600054 January 15, 2026 Resolving State Compliance achieved Monitoring or reporting · Archived
Monitoring and Reporting (DBP)Violation 2600066 · Total Haloacetic Acids (HAA5) · Stage 2 Disinfectants and Disinfection Byproducts RuleNoncompliance period start January 1, 2025 · period end December 31, 2025 · first reported March 2, 2026 · EPA return-to-compliance field December 31, 2025
2 linked actions
Enforcement and resolution records linked by EPA Action ID Date Category EPA action type 2600049 November 4, 2025 Informal State Violation/Reminder Notice 2600050 November 4, 2025 Informal State Public Notification requested Monitoring or reporting · Archived
Monitoring and Reporting (DBP)Violation 2600065 · TTHM · Stage 2 Disinfectants and Disinfection Byproducts RuleNoncompliance period start January 1, 2025 · period end December 31, 2025 · first reported March 2, 2026 · EPA return-to-compliance field December 31, 2025
2 linked actions
Enforcement and resolution records linked by EPA Action ID Date Category EPA action type 2600049 November 4, 2025 Informal State Violation/Reminder Notice 2600050 November 4, 2025 Informal State Public Notification requested Monitoring or reporting · Resolved
Monitoring and Reporting (DBP)Violation 2400056 · Total Haloacetic Acids (HAA5) · Stage 2 Disinfectants and Disinfection Byproducts RuleNoncompliance period start January 1, 2023 · period end December 31, 2023 · first reported August 28, 2025 · EPA return-to-compliance field December 31, 2023
4 linked actions
Enforcement and resolution records linked by EPA Action ID Date Category EPA action type 2400036 October 26, 2023 Informal State Violation/Reminder Notice 2400037 October 26, 2023 Informal State Public Notification requested 2400039 June 27, 2024 Informal State Public Notification received 2400040 August 5, 2024 Resolving State Compliance achieved Monitoring or reporting · Resolved
Monitoring and Reporting (DBP)Violation 2400055 · TTHM · Stage 2 Disinfectants and Disinfection Byproducts RuleNoncompliance period start January 1, 2023 · period end December 31, 2023 · first reported August 28, 2025 · EPA return-to-compliance field December 31, 2023
4 linked actions
Enforcement and resolution records linked by EPA Action ID Date Category EPA action type 2400036 October 26, 2023 Informal State Violation/Reminder Notice 2400037 October 26, 2023 Informal State Public Notification requested 2400039 June 27, 2024 Informal State Public Notification received 2400040 August 5, 2024 Resolving State Compliance achieved Monitoring or reporting · Resolved
Monitoring, Routine (RTCR)Violation 2300054 · Revised Total Coliform Rule · Revised Total Coliform RuleNoncompliance period start January 1, 2023 · period end January 31, 2023 · first reported August 28, 2025 · EPA return-to-compliance field January 31, 2023
4 linked actions
Enforcement and resolution records linked by EPA Action ID Date Category EPA action type 2300028 February 2, 2023 Informal State Violation/Reminder Notice 2300029 February 2, 2023 Informal State Public Notification requested 2300030 February 13, 2023 Resolving State Compliance achieved 2300032 March 31, 2023 Informal State Public Notification received Other or unclassified · Resolved
Public Notification Violation for NPDWR ViolationViolation 2300053 · Public Notice · Public Notice Rule and Revised PN RuleNoncompliance period start December 2, 2022 · period end March 31, 2023 · first reported August 28, 2025 · EPA return-to-compliance field March 31, 2023
2 linked actions
Enforcement and resolution records linked by EPA Action ID Date Category EPA action type 2300031 February 16, 2023 Informal State Violation/Reminder Notice 2300034 March 31, 2023 Resolving State Compliance achieved EPA health-based flag · Resolved
Failure To Address DeficiencyViolation 2300052 · Groundwater Rule · Ground Water RuleNoncompliance period start December 2, 2022 · period end August 3, 2023 · first reported August 28, 2025 · EPA return-to-compliance field August 3, 2023
5 linked actions
Enforcement and resolution records linked by EPA Action ID Date Category EPA action type 2300026 December 5, 2022 Informal State Public Notification requested 2300027 February 1, 2023 Informal State Formal Notice of Violation issued 2400038 March 6, 2023 Formal State Administrative/Compliance Order without penalty issued 2300033 March 31, 2023 Informal State Public Notification received 2300035 August 3, 2023 Resolving State Compliance achieved Monitoring or reporting · Resolved
Monitoring, Routine (RTCR)Violation 2100049 · Revised Total Coliform Rule · Revised Total Coliform RuleNoncompliance period start December 1, 2020 · period end December 31, 2020 · first reported March 3, 2021 · EPA return-to-compliance field December 31, 2020
4 linked actions
Enforcement and resolution records linked by EPA Action ID Date Category EPA action type 2100013 January 11, 2021 Resolving State Compliance achieved 2100015 January 19, 2021 Informal State Violation/Reminder Notice 2100016 January 19, 2021 Informal State Public Notification requested 2100019 June 29, 2021 Informal State Public Notification received Monitoring or reporting · Resolved
Monitoring, Routine (RTCR)Violation 2100048 · Revised Total Coliform Rule · Revised Total Coliform RuleNoncompliance period start November 1, 2020 · period end November 30, 2020 · first reported March 3, 2021 · EPA return-to-compliance field November 30, 2020
4 linked actions
Enforcement and resolution records linked by EPA Action ID Date Category EPA action type 2100014 January 11, 2021 Resolving State Compliance achieved 2100017 January 19, 2021 Informal State Violation/Reminder Notice 2100018 January 19, 2021 Informal State Public Notification requested 2200021 June 29, 2021 Informal State Public Notification received EPA health-based flag · Resolved
Treatment Technique No Certif. OperatorViolation 2100046 · Stage 1 Disinfectants and Disinfection Byproducts Rule · Stage 1 Disinfectants and Disinfection Byproducts RuleNoncompliance period start October 13, 2020 · period end December 1, 2020 · first reported March 3, 2021 · EPA return-to-compliance field December 1, 2020
2 linked actions
Enforcement and resolution records linked by EPA Action ID Date Category EPA action type 2100008 October 27, 2020 Informal State Violation/Reminder Notice 2100011 December 1, 2020 Resolving State Compliance achieved Monitoring or reporting · Resolved
Monitoring, Routine (RTCR)Violation 2100047 · Revised Total Coliform Rule · Revised Total Coliform RuleNoncompliance period start October 1, 2020 · period end October 31, 2020 · first reported March 3, 2021 · EPA return-to-compliance field October 31, 2020
4 linked actions
Enforcement and resolution records linked by EPA Action ID Date Category EPA action type 2100009 November 24, 2020 Informal State Violation/Reminder Notice 2100010 November 24, 2020 Informal State Public Notification requested 2100012 December 7, 2020 Resolving State Compliance achieved 2100020 June 29, 2021 Informal State Public Notification received Monitoring or reporting · Resolved
Monitoring and Reporting (DBP)Violation 2300051 · TTHM · Stage 2 Disinfectants and Disinfection Byproducts RuleNoncompliance period start January 1, 2020 · period end August 10, 2021 · first reported March 1, 2023 · EPA return-to-compliance field August 10, 2021
4 linked actions
Enforcement and resolution records linked by EPA Action ID Date Category EPA action type 2300022 November 24, 2020 Informal State Violation/Reminder Notice 2300023 November 24, 2020 Informal State Public Notification requested 2300024 June 29, 2021 Informal State Public Notification received 2300025 August 10, 2021 Resolving State Compliance achieved Monitoring or reporting · Resolved
Monitoring and Reporting (DBP)Violation 2300050 · Total Haloacetic Acids (HAA5) · Stage 2 Disinfectants and Disinfection Byproducts RuleNoncompliance period start January 1, 2020 · period end August 10, 2021 · first reported March 1, 2023 · EPA return-to-compliance field August 10, 2021
4 linked actions
Enforcement and resolution records linked by EPA Action ID Date Category EPA action type 2300022 November 24, 2020 Informal State Violation/Reminder Notice 2300023 November 24, 2020 Informal State Public Notification requested 2300024 June 29, 2021 Informal State Public Notification received 2300025 August 10, 2021 Resolving State Compliance achieved
EPA data and scope
How to read the records
The enforcement snapshot is federal fiscal 2026Q3. The EPA archive labels its violation file October 13, 2026. EPA says federal reporting can lag by several months. For current advisories, check your utility or local drinking-water authority.
- We matched active community water systems by public water system ID between EPA’s system search and SDWIS inventory. We show violations with a recorded noncompliance, initial reporting or return-to-compliance date from 2021 onward, plus earlier records listed as Addressed or Unaddressed.
- EPA’s health-based flag identifies violations of contaminant or disinfectant limits or treatment requirements. Monitoring and reporting violations describe required tests or reports. Neither category measures household exposure.
- Addressed means EPA records formal enforcement on a violation that remains unresolved in the snapshot. Unaddressed means no formal action is recorded for an unresolved violation. Resolved can mean compliance was restored, the rule ceased to apply, or further action was unnecessary. Archived is a separate status.
- We count a violation once per water system and group its distinct linked actions. Conflicting records are set aside. Places are EPA-listed search locations and can include mailing locations. Use the provider name and system ID to identify your service.
EPA data dictionary and files · EPA reporting and enforcement FAQ · Find an annual water quality report · How to get the report from your utility